Get_next_line

Score

Overview

This project focuses on implementing a function called get_next_line in C, which reads a line from a file descriptor (fd). The function allows reading text files line by line, facilitating file input processing.

char *get_next_line(int fd);

Mandatory Part

Features

• Reads a line from a file descriptor, returning it as a string.
• Dynamic buffer size allocation based on the input file.

Instructions

This will compile the source files and generate an executable.

To compile with a specific buffer size (e.g., 42):

cc -Wall -Wextra -Werror -D BUFFER_SIZE=42 <files>.c

Usage

#include "get_next_line.h"

int main(void) {
    int fd;
    char *line;

    // Open file descriptor (fd) or use standard input (STDIN_FILENO)
    fd = open("example.txt", O_RDONLY);
    // Loop to read lines until EOF or error
    while ((line = get_next_line(fd)) != NULL) {
        // Process line
        printf("%s\n", line);
        // Free dynamically allocated memory for line
        free(line);
    }
    // Close file descriptor
    close(fd);
    return (0);
}

Bonus Part

Features

• Handles multiple file descriptors simultaneously.
• Implements get_next_line using only one static variable.